c) Respiratory tract is the pathway of atmospheric air from the nostrils to
the alveoli.
Complete the illustration showing the pathway of air.
Atmospheric Air
Nostrils
Alveoli
Answers
Answer:
Atmospheric air
↓↑
external Nostrils
↓↑
nasal cavity
↓↑
pharynx
↓↑
larynx
↓↑
Trachea
↓↓
Bronchi
↓↑
Bronchioles
↓↑
Lungs
Concept - The respiratory tract is the lining that connects the respiratory organs.
Given -The pathway of atmospheric air from the nostrils to the alveoli.
Answer and explanation - There are 7 main structures are involved in respiration.
These are -
1. Nostril - Openings of nasal passages.
2. Pharynx - A cavity situated behind the nose and mouth which connect them with esophagus.
3. Larynx- It is a muscular structure at the upper part of trachea in human.
4. Trachea - The airway between larynx to bronchi.
Vocal cords are located in the trachea.
5. Bronchi - It's's the passage ways that connects the trachea with lungs.
Bronchi are divided according to their complexity.
6. Bronciolus - Tree like branched passages in the lungs.
7. Alveoli - They are situated in the lung where the mechanism of blood changing happens ( exchange of O2 and Co2 during respiration)
It is the smallest shaped respiratory structure reassembles ballon sac .
The pathway - First atmospheric air enters into the body via nostrils and also with oral cavities then follow the passage of pharynx as continues with the larynx, trachea then primary bronchi, secondary bronchi, tertiary bronchi, bronchioles and the pathway ends in the alveoli and O2 enters into the blood stream.
